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| Titel |
Stability and nonlinear regimes of flow over a saturated porous medium |
| VerfasserIn |
T. P. Lyubimova, D. T. Baydina, D. V. Lyubimov |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1023-5809
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| Digitales Dokument |
URL |
| Erschienen |
In: Nonlinear Processes in Geophysics ; 20, no. 4 ; Nr. 20, no. 4 (2013-07-23), S.543-547 |
| Datensatznummer |
250018989
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| Publikation (Nr.) |
 copernicus.org/npg-20-543-2013.pdf |
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| Zusammenfassung |
| The paper deals with the investigation of stability and nonlinear regimes of
flow over the saturated porous medium applied to the problem of stability of
water flow over the bottom covered with vegetation. It is shown that the
velocity profile of steady plane-parallel flow has two inflection points,
which results in instability of this flow. The neutral stability curves, the
dependencies of critical Reynolds number and the wave number of most
dangerous perturbations on the ratio of porous layer thickness to the total
thickness are obtained. The nonlinear flow regimes are investigated
numerically by finite difference method. It is found that at supercritical
parameter values waves travelling in the direction of the base flow take
place. |
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